Photocatalytic performances of Ag/ALa(4)Ti(4)O(15) (A = Ca, Sr and Ba) on H2O2 oxidative desulfurization

作者：Zhao, Na; Li, Siwen; Zhang, Xin; Huang, Xinyue; Wang, Jinyi; Gao, Ruimin; Zhao, Jianshe^*; Wang, Junlong

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2015, 481: 125-132.

DOI：10.1016/j.colsurfa.2015.04.028

• Perovskite composite oxides
• Photocatalyst
• Oxidative desulfurization
• Dibenzothiophene
• Desulfurization test

Photocatalytic oxidative desulfurization of dibenzothiophene (DBT) with H2O2 (30%) and AgIALa(4)Ti(4)O(15) (A=Ca, Sr and Ba) as the photocatalysts were studied. Ag cocatalyst-loaded ALa(4)Ti(4)O(15) (A=Ca, Sr and Ba) were synthesized by incipient wetness. Reaction time, temperature and the amount of hydrogen peroxide were investigated as the important parameters for optimization of the reaction and a potential removal mechanism of photocatalytic oxidation was proposed. Ag (2 wt%)/CaLa4Ti4O15 and Ag wt%)/BaLa4Ti4O15 were found to give remarkable catalytic activity and high selectivity for catalytic experiments. Actually, 99.0% and 98.0% of DBT were converted respectively according to the desulfurization tests. Moreover, these two catalysts were characterized by infrared spectroscopy (IR), X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectrum (XPS).

• 出版日期2015-9-20
• 单位西北大学; 渭南师范学院